1.延安大学 医学院,陕西 延安 716000
2.陕西省化学反应工程重点实验室, 延安大学 化学化工学院,陕西 延安 716000
赵 艳,实验师,研究方向:荧光探针的研究,E-mail:fafafa1982@126.com
纸质出版日期:2024-07-15,
收稿日期:2024-03-20,
修回日期:2024-05-15,
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赵艳,孙雪花.掺氮碳量子点用于柳氮磺吡啶的快速检测[J].分析测试学报,2024,43(07):1052-1057.
ZHAO Yan,SUN Xue-hua.Rapid Detection of Sulfasalazine Using a Nitrogen-doped Carbon Quantum Dots[J].Journal of Instrumental Analysis,2024,43(07):1052-1057.
赵艳,孙雪花.掺氮碳量子点用于柳氮磺吡啶的快速检测[J].分析测试学报,2024,43(07):1052-1057. DOI: 10.12452/j.fxcsxb.24032002.
ZHAO Yan,SUN Xue-hua.Rapid Detection of Sulfasalazine Using a Nitrogen-doped Carbon Quantum Dots[J].Journal of Instrumental Analysis,2024,43(07):1052-1057. DOI: 10.12452/j.fxcsxb.24032002.
以微波法一步合成制备出荧光性能强、荧光量子产率为89.38%的掺氮碳量子点(N-CDs),并通过荧光猝灭法建立了快速准确测定柳氮磺吡啶(SSZ)的新方法。通过透射电子显微镜、傅里叶红外光谱对碳量子点进行表征,结果显示N-CDs的平均粒径为2.91 nm,主要由C、O、N元素组成,大量羰基、羟基和羧基存在于N-CDs表面。在最佳条件下,柳氮磺吡啶浓度在0.1~ 2 μmol/L和3 ~ 200 μmol/L范围内线性良好,检出限为 0.2 μmol/L。将所建方法用于柳氮磺吡啶肠溶片中柳氮磺吡啶含量的测定,回收率为97.3%~102%。
The nitrogen-doped carbon quantum dots(N-CDs) with high fluorescence properties and fluorescence quantum yield of 89.38% were prepared by microwave one-step synthesis. A new method for the rapid and accurate determination of sulfasalazine(SSZ) was established by fluorescence quenching. The carbon quantum dots were characterized by transmission electron microscopy(TEM) and Fourier infrared spectroscopy(FT-IR). The results showed that the average particle size of N-CDs was 2.91 nm,mainly composed of C,O and N elements,and a large number of carbonyl,hydroxyl and carboxyl groups existed on the surface of N-CDs. Under the optimal conditions,the concentration of sulfasalazine was linear in the range of 0.1-2 μmol/L and 3-200 μmol/L,and the detection limit was 0.2 μmol/L. The content of sulfasalazine in sulfasalazine enteric-coated tablets was determined by this method,and the recovery was 97.3%-102%.
微波法掺氮碳量子点荧光猝灭柳氮磺吡啶
microwave methodnitrogen-doped carbon quantum dotsfluorescence quenchingsulfasalazine
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